Home / 90,882.81-136,331.51-31,717.17

Finding the Fourth Proportional to 90,882.81, 136,331.51 and 31,717.17

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Solution

The fourth proportional to 90,882.81, 136,331.51 and 31,717.17 is: 47,578.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,882.81 : 136,331.51 = 31,717.17 : x
  2. Step 2: Convert to fraction form
    90,882.81/136,331.51 = 31,717.17/x
  3. Step 3: Cross multiply
    90,882.81x = 136,331.51 × 31,717.17
  4. Step 4: Simplify right side
    90,882.81x = 4,324,049,520.44
  5. Step 5: Solve for x
    x = 4,324,049,520.44/90,882.81
  6. Step 6: Final answer
    x = 47,578.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.